List of top Questions asked in TS EAMCET

A radar sends sound waves of frequency 'f' towards an aeroplane moving away from it. If the difference in the frequencies of waves sent and received by the radar is 10% of 'f', then the speed of the aeroplane in $ms^{-1}$ is nearly (Speed of sound in air = 342 $ms^{-1}$)

When a long hollow steel pipe is struck with a hammer at one end, two sounds are heard at the other end. If the time interval between the two sounds heard is 0.53 s, then the length of the pipe is
(Speed of sound in steel is 5100 $ms^{-1}$ and speed of sound in air is 330 $ms^{-1}$)

A gaseous mixture contains 2 moles of monatomic gas and 2 moles of diatomic gas at a temperature of 500 K. The total internal energy of the gaseous mixture is
(Atmospheric pressure = $10^5$ Pa and universal gas constant = $8.3 \, J mol^{-1} K^{-1}$)

The heat supplied to an ideal diatomic gas so that it expands from a volume of $18 \times 10^{-3} m^3$ to $37 \times 10^{-3} m^3$ at a constant pressure of 2 atmospheres is (Atmospheric pressure = $10^5$ Pa)

If the coefficient of volume expansion of honey is $150 \times 10^{-5} K^{-1}$, then the percentage change in its density for $10^{\circ}C$ rise in its temperature is

Nitrogen and oxygen of volumes one litre each at atmospheric pressure are mixed in a closed container of volume three litres. If the process is isothermal, the ratio of final pressure of the mixture and atmospheric pressure is

The pressure inside a mercury drop of diameter 2 mm is (Surface tension of mercury $= 0.5 Nm^{-1}$ and atmospheric pressure $= 10^5$ Pa)

Petrol (density $= 750 \, kg m^{-3}$) and diesel (density $= 850 \, kg m^{-3}$) enter into two identical venturimeters each with a velocity $10 ms^{-1}$ as shown in the figure. If $\Delta h_1$ is the difference in heights of petrol in the two vertical tubes of venturimeter A and if $\Delta h_2$ is the difference in heights of diesel in the two vertical tubes of the venturimeter B, then $\Delta h_1 : \Delta h_2 =$

A metal beam of length 1 m, breadth 2.5 cm and thickness 5 mm supported at its ends is loaded at its center by a weight of 25 N. The metal beam sags at the middle by an amount of (Young's modulus of the metal $= 2\times10^{11} Nm^{-2}$)

A solid sphere of mass M and radius R is placed inside a spherical shell of mass M and radius 4R such that their surfaces touch each other. The gravitational force due to the spherical shell and solid sphere on a body of unit mass placed at the centre of the spherical shell is (G = Universal gravitational constant)

The time period of a particle executing simple harmonic motion is $2\pi$ second. If the maximum acceleration of the particle is $10 ms^{-2}$, then the maximum velocity of the particle is

A solid sphere of mass 2 kg and radius 50 cm is rotating about its diameter with an angular speed of $50 rad s^{-1}$. The angular momentum of the sphere is

Six particles each of mass 100 g are placed at the six vertices of a regular hexagon of side $10\sqrt{3}$ m. The moment of inertia of the system of particles about an axis passing through any two diagonally opposite vertices of the hexagon is

A body is allowed to fall freely under gravity from a height of 15 m from the ground. At a point in its path, if the kinetic energy of the body is 200% more than its potential energy, then the velocity of the body at that point is (Acceleration due to gravity = 10 $ms^{-2}$)

A body of mass 0.2 kg is falling freely from a height of 180 m from the ground. The ratio of the works done by the gravitational force in the first two seconds and in the next two seconds of motion of the body is

A body of mass 3 kg is kept on a rough horizontal surface. A horizontal force of 20 N acting on the body produces an acceleration of $4 ms^{-2}$ in the body. To double the acceleration of the body, the horizontal force applied is to be increased by

Two vectors are given by $\vec{A} = \hat{i} - 2\hat{j} + 3\hat{k}$ and $\vec{B} = 2\hat{i} - 4\hat{j} + 3\hat{k}$. The unit vector along $\vec{A} + \vec{B}$ is

A body X is allowed to fall freely from a height of 125 m from the ground and another body Y is thrown at the same instant vertically upwards with a velocity of $50 ms^{-1}$ from the ground. The relative velocity of the body Y with respect to the body X when they cross each other is

A physical quantity is represented by $P = X^aY^bZ^c$. If the errors in the measurements of the physical quantities X, Y and Z are respectively a%, b% and c%, then the percentage error in the determination of quantity P is

The ratio of the relative strengths of weak nuclear force and gravitational force is

Prolonged P-R interval indicates

Indian carp is

Mating of superior male of one breed and superior female of another breed is called

If speciation takes place due to geographical isolation, it is called

Study the following and choose the incorrect statements
I. In stabilizing selection, the organisms with average phenotype are preserved, whereas extreme individuals of both sides are eliminated
II. Movement of genes from one population to the other is called directional selection
III. Centripetal selection operates when homogeneous environment changes into a heterogeneous type
IV. Genetic drift is related to small populations